PV2R1-23-F-RAA-43 Yuken Vane Pump 22.7 cm³/rev

Product Overview

The PV2R1-23-F-RAA-43 is a Yuken PV2R Series single fixed-displacement vane pump based on the PV2R1 frame.

Yuken officially describes the PV2R Series as high-pressure, high-performance vane pumps developed especially for low-noise operation. The official product platform provides product catalogs, installation drawings, structural drawings and 2D/3D CAD resources for the PV2R family.

For PV2R1-23, Yuken specifies a geometric displacement of 22.7 cm³/rev. With anti-wear petroleum-based hydraulic oil, the maximum operating pressure is 21 MPa. The maximum speed for standard petroleum-based oil is 1800 r/min, while the minimum speed is 750 r/min. Other fluid categories have different pressure and speed limits.

The complete model code PV2R1-23-F-RAA-43 is defined by Yuken as:

• PV2R1: PV2R1 series
• 23: Displacement code, corresponding to 22.7 cm³/rev
• F: Flange mounting
• R: Clockwise rotation, viewed from the shaft end
• A: Discharge port upward
• A: Suction port upward
• 43: Design Number 43.

Yuken’s current official product page also provides the PV2R1 43 Design installation and structural drawings, together with PV2R1 3D CAD data.

For aftermarket replacement, the complete model code should be matched rather than only the displacement designation. Our replacement units can be engineered around the original mounting, shaft, rotation and port configuration and subjected to 100% simulated operating-condition testing before shipment.

Technical Specifications

Primary Model: PV2R1-23-F-RAA-43

• Brand: Yuken / Yuken Kogyo
• Series: PV2R Series Single Vane Pumps
• Model: PV2R1-23-F-RAA-43
• Pump Type: Single Fixed Displacement Vane Pump
• Frame: PV2R1
• Displacement Code: 23
• Geometric Displacement: 22.7 cm³/rev
• Control Method: Fixed displacement
• Mounting: F — Flange Mounting
• Rotation: R — Clockwise, viewed from shaft end
• Discharge Port: A — Upward
• Suction Port: A — Upward
• Design Number: 43
• Maximum Operating Pressure, Anti-Wear Petroleum Oil: 21 MPa
• Maximum Operating Pressure, R&O Petroleum Oil: 16 MPa
• Maximum Operating Pressure, Anti-Wear Water Glycol: 16 MPa
• Maximum Operating Pressure, Water Glycol: 7 MPa
• Maximum Operating Pressure, Water-in-Oil Emulsion: 7 MPa
• Maximum Operating Pressure, Phosphate Ester: 16 MPa
• Maximum Speed, Standard Petroleum Oil: 1800 r/min
• Maximum Speed, Water-Containing / Phosphate-Ester Fluids: 1200 r/min
• Minimum Speed: 750 r/min
• Approximate Mass, PV2R1 Flange Mount: 9.0 kg
• Peak Pressure: Yuken does not publish a separate peak-pressure rating for this exact model in the current official material. Therefore, no unsupported peak-pressure value is stated. Selection should use the applicable maximum operating pressure for the actual hydraulic fluid.

Theoretical Flow Reference

Using the manufacturer’s published 22.7 cm³/rev geometric displacement:

• 1000 r/min: approximately 22.7 L/min
• 1500 r/min: approximately 34.05 L/min
• 1800 r/min: approximately 40.86 L/min

These are theoretical displacement-flow calculations before volumetric losses. Actual delivery depends on pressure, viscosity, temperature, speed and volumetric efficiency. Yuken provides output-flow and input-power characteristics under defined test conditions.

PV2R1 Displacement Range

Yuken’s official PV2R specifications list:

• PV2R1-6: 5.8 cm³/rev
• PV2R1-8: 8.0 cm³/rev
• PV2R1-10: 9.4 cm³/rev
• PV2R1-12: 12.2 cm³/rev
• PV2R1-14: 13.7 cm³/rev
• PV2R1-17: 16.6 cm³/rev
• PV2R1-19: 18.6 cm³/rev
• PV2R1-23: 22.7 cm³/rev
• PV2R1-25: 25.3 cm³/rev
• PV2R1-31: 31.0 cm³/rev.

The PV2R1 designation therefore covers multiple rotating-group displacement configurations within the same pump frame.

PV2R1-23-F-RAA-40 vs. PV2R1-23-F-RAA-43

The supplied product title contains both:

PV2R1-23-F-RAA-40
PV2R1-23-F-RAA-43

These should not be treated as automatically identical configurations.

Yuken’s current official product page explicitly provides:

• PV2R1 43 Design installation drawing
• PV2R1 43 Design structural drawing
• PV2R1 3D CAD data.

For Design 40, sufficient current official material was not located during this verification to independently confirm its full mechanical dimensions and configuration. It is therefore safer to classify PV2R1-23-F-RAA-40 as a historical or configuration-to-be-confirmed variant rather than transferring the complete 43-design specification to it.

Key Technical Advantages

1. High-Pressure Fixed-Displacement Vane Architecture

Yuken developed the PV2R Series for high-pressure, high-performance and low-noise operation. For the PV2R1-23, the maximum operating pressure reaches 21 MPa with anti-wear petroleum-based hydraulic oil.

The fixed-displacement design provides a straightforward hydraulic power source for systems that do not require variable displacement control.

2. Precisely Defined 22.7 cm³/rev Displacement

The manufacturer specifies 22.7 cm³/rev for PV2R1-23. The “23” in the model designation therefore should not be interpreted as exactly 23.0 cm³/rev.

This value directly influences:

• Theoretical flow
• Shaft torque
• Motor-power calculations
• Pump-speed selection
• Thermal loading

3. Low-Noise Design

Yuken explicitly states that the PV2R Series was developed especially for low-noise operation.

Actual machine noise remains dependent on suction conditions, aeration, piping support, coupling alignment and fluid condition.

4. Flange-Mounted Industrial Configuration

The F code specifies flange mounting. Yuken provides dedicated installation and structural drawings for the 43-design PV2R1 configuration.

This makes the model suitable for engineered replacement projects where the original flange interface and port layout must be retained.

5. Full Model Coding Supports Accurate Retrofit

The complete PV2R1-23-F-RAA-43 code identifies:

Displacement + Mounting + Rotation + Port Orientation + Design

Two PV2R1-23 pumps may therefore have identical displacement but different mechanical compatibility if their rotation, port orientation or design number differs.

6. Cartridge-Based Maintenance

Yuken’s official PV2R documentation specifies integral driving components as cartridge kits, supporting targeted service and replacement of the main working assembly.

7. Multiple Hydraulic-Fluid Configurations

Yuken separates petroleum oils, water glycols, W/O emulsions and phosphate esters in its specifications and assigns different pressure and speed limits to each fluid category.

Fluid selection and seal configuration must therefore be verified before operation.

Application Areas

Based on Yuken’s official PV2R positioning, the PV2R1-23-F-RAA-43 can be used in:

• Injection molding machines
• Die-casting machines
• Machine tools
• Metalworking machinery
• Industrial hydraulic power units
• Hydraulic clamping systems
• Forming machinery
• Automated production equipment
• General industrial hydraulic machinery

Yuken specifically identifies applications including injection molding machines, die casting machines, machine tools and hydraulic machinery.

Final suitability should be verified against the machine’s actual pressure, flow, speed, hydraulic fluid and mounting configuration.

Expert Maintenance Tips

1. Verify the Full Model Number

For replacement, record:

PV2R1-23-F-RAA-43

rather than only:

PV2R1-23

The F / R / A / A / 43 configuration fields should be checked individually.

2. Observe the High-Pressure Speed Requirement

Yuken specifies that when operating above 16 MPa, pump speed should be increased above 1450 r/min.

Machines operating near 18–21 MPa should therefore consider speed, oil temperature, viscosity and inlet conditions together.

3. Match Pressure to Hydraulic Fluid

For this pump family:

• Anti-wear petroleum oil: 21 MPa
• R&O petroleum oil: 16 MPa
• Anti-wear water glycol: 16 MPa
• Water glycol: 7 MPa
• Water-in-oil emulsion: 7 MPa
• Phosphate ester: 16 MPa.

These ratings should not be generalized across all fluid types.

4. Protect the Suction Circuit

Potential pump noise and instability can originate from:

• Undersized suction piping
• Excessive pipe length
• Sharp bends
• Air leakage
• Low reservoir level
• Excessive fluid viscosity

Yuken’s installation documentation specifically addresses suction conditions and air bleeding during startup.

5. Bleed Air Before Full-Load Operation

Yuken notes that the pump may have difficulty drawing fluid during startup or after extended shutdown. Air should therefore be bled from the discharge side or through an appropriate air-bleeding valve.

6. Maintain Accurate Shaft Alignment

Yuken recommends flexible couplings, avoidance of bending and thrust loads, and limits shaft misalignment to 0.1 mm TIR with angular error below 0.2°.

Poor alignment can cause:

Shaft-Seal Leakage → Bearing Loading → Increased Noise → Reduced Service Life

7. Control Hydraulic Contamination

Yuken’s installation guidance recommends fluid cleanliness within JIS B 9933 / ISO 4406 23/21/18 or NAS 12, together with a 100 μm / 150-mesh reservoir filter on the suction line.

8. Validate Replacements Under Simulated Operating Conditions

For the PV2R1-23-F-RAA-43, recommended factory verification should cover:

Rotation → No-Load Running → Flow → Pressure Build-Up → Leakage → Noise → Temperature Rise

The final verification should confirm:

22.7 cm³/rev + Correct Rotation + Correct Port Orientation + Applicable Pressure Limit

This provides stronger evidence of both mechanical interchangeability and functional compatibility.